Suction cleaner



Oct. 22, 1935. C, G BQE'TTLER. I 2,017,893

SUCTION CLEANER Filed Dec. 14, 1935 IIIIIIIIIIIII/ gogogogogogogogogo3080 l m' m' OOOOOOOOOOOOOOOO O O O O O O O O O O O O O O O O O INVENTORATTORNEY Patented Oct.- 22, 1935 I SUCTION CLEANER Christian G.Boettler, North Canton, Ohio, as

signor to The Hoover Company, North Canton, Ohio, a corporation of OhioApplication December 14, 1933, Serial No. 702,281

1 Claim.

The present invention relates to suction cleaners and particularly tonew and novel improvements in suction cleaner nozzles. cally theinvention comprises a new lip which forms a part of anagitator-containing suction cleaner nozzle.

It is an object of the invention to provide a new and improved suctioncleaner. It is a further object of the invention to provide a new andimproved suction cleaner nozzle. It is an additional object of theinvention to provide a new and improved nozzle lip in a suction cleanernozzle. A still further object is to provide a nozzle lip which permitsthe passage of cleaning air therethru in addition to its function ofcontacting the surface covering. Still another object is the provisionof a nozzle lip which restricts the nozzle mouth width and also permitsthe passage of air through its own body. These and other objects willappear upon reading the following specification and claim and uponconsidering in connection therewith the attached drawing to which theyrelate.

In the drawing in which a preferred embodiment of the invention isdisclosed:

Figure 1 is a side elevation, partly in section, of a modern suctioncleaner embodying the present invention;

Figure 2 is a partial bottom view of the machine shown in Figure 1 withcertain parts broken away;

Figure 3 is a partial bottom view of a second embodiment oftheinvention;

Figure 4 is a partial side view of the invention showing the frontsupporting means for the lip in the nozzle.

A modern suction cleaner is shown in the drawing and comprises the usualnozzle I, fan chamber 2, exhaust outlet 3, air passageway 4 between thenozzle and the fan chamber 2, and a motor casing 5. A suitable unshowndriving motor is positioned within the casing 5, the shaft 6 of whichextends downwardly through the fan casing 2 where the suction-creatingfan I is mounted thereon. The lower end of the shaft is provided with apulley 8 which functions in the operation of the machine to transmitpower thru the belt 9 to the rotary agitator I0 within the nozzle I. Theagitator is of a well-known design, including rigid beater elements andfiexiblebrush elements, and is adapted to contact the surface-coveringbetween the front and rear nozzle lips I I and I 2. As in the usualsuction cleaner the machine is movably supported upon front and rearsupporting wheels, indicated by the reference characters I3 and 14,there being provided adjusting means I5 for the More specifirear wheelsby the use of which the nozzle can be raised or lowered relative to thesurface covering undergoing cleaning in order that cleaning air enteringthe nozzle and the agitator therein may function most effectively uponthe covering. The usual dust bag, indicated by the reference characterI6, is removably attached to the exhaust outlet 3, being adapted tofilter the dirt-laden air exhausted therethrough, and the usual pivotedhandle II is provided through which the opera- 10 tor may exert apropelling force in the operation of the cleaner.

The general arrangement of this machine is well known and no claim ofinvention is made relative thereto. The invention towards which 16 thisapplication is directed specifically is to the construction of thecleaner nozzle and more specifically to the construction of the nozzlelip I2 thereof.

. In the present disclosure the rear lip I2 of the 20 cleaner nozzle isdisclosed as being formed integrally upon the removable bottom plate I8of the air passageway. This plate is normally held in place upon thecleaner, it being provided with lugs I9, I9 at its forward end whichoverlie the rear- 25 ward extremities of horizontally extending shelfmembers '20, 20 at the bottom and ends of the nozzle. The rear end ofthe -plate is secured through being provided with a rearwardly extendinglug 2| which seats under a latch member 22 which is manually operable ina common and well known manner. Bottom plate I8 is also provided with aseal 23 which extends around its edge in line contact with the loweredge of the side walls of the passageway 4 to prevent the escape andleakage of air between the side walls and the bottom plate.

The rear nozzle lip I2, as shown in Figures 1 and- 2, is formed in adefinite manner for a specific purpose. While the usual nozzle lip is ofthe type of the front nozzle lip, indicated by the reference characterII, the rear nozzle lip differs therefrom in that it is provided withopenings 24 across its length, the lip being in substantially the sameplane on both sides thereof. These openings permit the direct passage ofcleaning air through the nozzle lip and into the nozzle to join the airwhich has entered between the nozzle lip and is passing through thepassageway 4 toward the suction-creating fan. By providing the openings24 it is possible to extend the nozzle lip I2 inwardly to a positionmuch closer to the agitator than would be possible otherwise withoutmaterially reducing the flow of air into I the nozzle, additionallyaccomplishing the function of preventing undue carpet contact with theagitator.

' Referring now to Figure 3, in particular, a second embodiment of theinvention is disclosed in which the nozzle lip I2 is provided with amultiplicity of relatively small apertures or openings 25 which havereplaced the relatively large openings 24 of the first embodiment. Thisconstruction is identical in functional operation with the firstembodiment.

While in the present disclosure the nozzle lip I 2 has been shown formedintegrally upon the removable bottom plate I8, it is to be understoodthat it is within the scope of the invention to mount the lip in anysuitable manner, and

that the precise means may be varied without altering functionally theoperation of the machine.

I claim:

In a suction cleaner, suction-creating means, a nozzle interiorlyconnected to said means and formed with a mouth, surface-contacting lipsdefining said month, one of said lips including a surface-contactingportion and a second surfacecontacting portion spaced therefrom in thedirection of the o-ther'nozzle lip, said lip being 10 formed to admitair-to said nozzle between said portions, and a drivensurface-contacting agitator positioned in said mouth and cooperatingwith said second surface-contacting portion in holding a surfacecovering undergoing cleaning 15 from said mouth.

CHRISTIAN G. BOETTLER.

